Arrhythmias and conduction disturbancesUsefulness of electroanatomical mapping to differentiate between right ventricular outflow tract tachycardia and arrhythmogenic right ventricular dysplasia
Section snippets
Patient groups
All patients gave written informed consent to the electrophysiologic and ablation studies. The RVOT tachycardia group consisted of 12 patients (4 men and 8 women; mean age 38 ± 8 years old) who had recurrent episodes of symptomatic tachycardia. Only patients who had typical RVOT tachycardia were included in the study. Physical examination, chest x-rays, and 12-lead electrocardiograms were normal in all patients. All patients underwent transthoracic echocardiography, including 2-dimensional,
Results
Detailed electroanatomic maps were generated in all patients in the control (Figure 1), RVOT (Figure 2), and ARVD (Figure 3) groups.
Discussion
In this study we compared electroanatomic findings in patients who had RVOT tachycardia with those in patients who had established ARVD and control patients who had no evidence of ventricular arrhythmia. The major findings of this study are that the local endocardial electrograms in the RVOT tachycardia group were characterized by preserved voltage and short durations throughout the right ventricle and that these parameters did not differ significantly from those measured in controls. Our
References (17)
- et al.
Electroanatomic mapping of arrhythmogenic right ventricular dysplasia
J Am Coll Cardiol
(2001) - et al.
Spectrum of clinicopathologic manifestations of arrhythmogenic right ventricular cardiomyopathy/dysplasia: a multicenter study
J Am Coll Cardiol
(1997) - et al.
Endomyocardial biopsy in arrhythmogenic right ventricular cardiomyopathy
Am Heart J
(1996) - et al.
MR imaging of arrhythmogenic right ventricular dysplasia
Magn Reson Imaging Clin North Am
(2003) - et al.
Diagnosis of arrhythmogenic right ventricular dysplasia/cardiomyopathyTask Force of the Working Group Myocardial and Pericardial Disease of the European Society of Cardiology and of the Scientific Council on Cardiomyopathies of the International Society and Federation of Cardiology
Br Heart J
(1994) - et al.
A novel method for nonfluoroscopic catheter-based electroanatomical mapping of the heartIn vitro and in vivo accuracy results
Circulation
(1997) - et al.
Electromechanical characterization of chronic myocardial infarction in the canine coronary occlusion model
Circulation
(1998) - et al.
Right ventricular dysplasia: a report of 24 adult cases
Circulation
(1982)
Cited by (45)
Electroanatomical voltage mapping with contact force sensing for diagnosis of arrhythmogenic right ventricular cardiomyopathy
2023, International Journal of CardiologyAdenosine-insensitive right ventricular tachycardia: Novel variant of idiopathic outflow tract tachycardia
2014, Heart RhythmCitation Excerpt :In contrast, patients with ARVC in our study had areas of low voltage along with sites with fractionated electrograms throughout the right ventricle. However, although differentiating clinically manifest ARVC from idiopathic RVOT tachycardia is usually readily apparent,10,11 some patients with early ARVC may not have detectable evidence of right ventricular structural disease. Cases of ARVC due to plakoglobin mutations leading to significant arrhythmias before the development of structural heart disease by cardiac tissue pathology have been reported.12
Nonpharmacologic treatment of tachyarrhythmias
2012, Cardiovascular Therapeutics: A Companion to Braunwald's Heart Disease: Fourth Edition